.dev-page { max-width: 800px; margin: 0 auto; padding: 24px 16px; }
.dev-hero { display: flex; align-items: center; justify-content: space-between; margin-bottom: 24px; }
.dev-hero__title { font-size: 22px; font-weight: 700; color: var(--text-primary); font-family: 'Manrope', sans-serif; margin: 0; }
.dev-hero__version { font-size: 13px; font-weight: 600; color: var(--text-muted); background: var(--bg-hover); padding: 4px 10px; border-radius: 6px; }

.dev-card { background: var(--bg-base); border: 1px solid var(--border); border-radius: 12px; overflow: hidden; margin-bottom: 20px; }
.dev-card__head { padding: 16px 20px; border-bottom: 1px solid var(--border); }
.dev-card__title { font-size: 15px; font-weight: 700; color: var(--text-primary); margin: 0; font-family: 'Manrope', sans-serif; }
.dev-card__body { padding: 20px; }

.dev-stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 16px; margin-bottom: 20px; }
.dev-stat { text-align: center; padding: 16px 12px; background: var(--bg-hover); border-radius: 10px; }
.dev-stat__value { display: block; font-size: 22px; font-weight: 700; color: var(--text-primary); font-family: 'Manrope', sans-serif; }
.dev-stat__label { display: block; font-size: 12px; font-weight: 500; color: var(--text-muted); margin-top: 4px; }

.dev-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.dev-btn {
  padding: 10px 20px; font-size: 13px; font-weight: 600; border: none; border-radius: 8px;
  cursor: pointer; font-family: 'Manrope', sans-serif; transition: opacity .15s;
}
.dev-btn:hover { opacity: .85; }
.dev-btn:disabled { opacity: .5; cursor: not-allowed; }
.dev-btn--primary { background: #3b82f6; color: #fff; }
.dev-btn--danger { background: #ef4444; color: #fff; }

.dev-progress { margin-top: 20px; }
.dev-progress.is-hidden { display: none; }
.dev-progress__text { font-size: 13px; font-weight: 600; color: var(--text-primary); margin-bottom: 8px; font-family: 'Manrope', sans-serif; }
.dev-progress__bar-wrap { height: 8px; background: var(--bg-hover); border-radius: 4px; overflow: hidden; }
.dev-progress__bar { height: 100%; background: #3b82f6; border-radius: 4px; transition: width .2s; width: 0; }
.dev-progress__detail { font-size: 12px; color: var(--text-muted); margin-top: 6px; }

.dev-result { margin-top: 16px; padding: 12px 16px; border-radius: 8px; font-size: 13px; font-weight: 500; font-family: 'Manrope', sans-serif; }
.dev-result.is-hidden { display: none; }
.dev-result--success { background: #dcfce7; color: #166534; border: 1px solid #86efac; }
.dev-result--error { background: #fef2f2; color: #991b1b; border: 1px solid #fca5a5; }

[data-theme="dark"] .dev-result--success { background: #14532d; color: #86efac; border-color: #166534; }
[data-theme="dark"] .dev-result--error { background: #450a0a; color: #fca5a5; border-color: #991b1b; }

.dev-btn--purple { background: #7c3aed; color: #fff; }
.dev-card__desc { font-size: 13px; color: var(--text-muted); margin: 0 0 16px; line-height: 1.5; }

/* VIN Scanner Result */
.dev-vin-result { background: var(--bg-hover); border: 1px solid var(--border); border-radius: 10px; padding: 16px 20px; }
.dev-vin-result.is-hidden { display: none; }
.dev-vin-result__vin {
  font-size: 18px; font-weight: 700; font-family: 'IBM Plex Mono', monospace;
  letter-spacing: 1.5px; color: #7c3aed; margin-bottom: 6px;
}
[data-theme="dark"] .dev-vin-result__vin { color: #a78bfa; }
.dev-vin-result__status { font-size: 13px; color: var(--text-muted); margin-bottom: 12px; }
.dev-vin-result__fields { display: grid; gap: 4px; }
.dev-vin-result__row {
  display: flex; justify-content: space-between; align-items: baseline;
  padding: 5px 0; border-bottom: 1px solid var(--border);
}
.dev-vin-result__row:last-child { border-bottom: none; }
.dev-vin-result__label { font-size: 12px; font-weight: 600; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.5px; }
.dev-vin-result__value { font-size: 13px; font-weight: 600; color: var(--text-primary); text-align: right; }

/* Export / Import */
.dev-export-sep {
  text-align: center; margin: 16px 0; font-size: 12px; font-weight: 600;
  color: var(--text-muted); position: relative;
}
.dev-export-sep::before, .dev-export-sep::after {
  content: ''; position: absolute; top: 50%; height: 1px; background: var(--border); width: calc(50% - 20px);
}
.dev-export-sep::before { left: 0; }
.dev-export-sep::after { right: 0; }

.dev-import-zone {
  border: 2px dashed var(--border); border-radius: 12px; padding: 28px 20px;
  text-align: center; cursor: pointer; transition: border-color .15s, background .15s;
}
.dev-import-zone:hover, .dev-import-zone--drag { border-color: #3b82f6; background: rgba(59,130,246,.04); }
.dev-import-zone__text { font-size: 13px; font-weight: 600; color: var(--text-primary); margin-top: 8px; }
.dev-import-zone__link { color: #3b82f6; cursor: pointer; text-decoration: underline; }
.dev-import-zone__hint { font-size: 11px; color: var(--text-muted); margin-top: 4px; }

.dev-import-preview { background: var(--bg-hover); border: 1px solid var(--border); border-radius: 10px; padding: 16px 20px; margin-top: 16px; }
.dev-import-preview.is-hidden { display: none; }
.dev-import-preview__head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 10px; font-size: 14px; color: var(--text-primary); }
.dev-import-preview__meta { font-size: 12px; color: var(--text-muted); font-weight: 500; }
.dev-import-preview__tables {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 4px;
  max-height: 200px; overflow-y: auto; font-size: 12px; color: var(--text-secondary);
  font-family: 'IBM Plex Mono', monospace;
}
.dev-import-preview__table-item {
  display: flex; justify-content: space-between; padding: 4px 8px; border-radius: 4px; background: var(--bg-base);
}
.dev-import-preview__table-count { color: var(--text-muted); font-weight: 600; }

/* Export overlay */
.dev-export-overlay {
  position: fixed; inset: 0; z-index: 9999;
  background: rgba(0,0,0,.55); backdrop-filter: blur(4px);
  display: flex; align-items: center; justify-content: center;
}
.dev-export-overlay.is-hidden { display: none; }
.dev-export-overlay__card {
  background: var(--bg-base, #fff); border-radius: 16px; padding: 40px 48px;
  text-align: center; box-shadow: 0 20px 60px rgba(0,0,0,.25);
  max-width: 360px; width: 90%;
}
.dev-export-overlay__spinner {
  width: 40px; height: 40px; margin: 0 auto 20px;
  border: 3px solid var(--border, #e5e7eb); border-top-color: #3b82f6;
  border-radius: 50%; animation: dev-spin 0.8s linear infinite;
}
@keyframes dev-spin { to { transform: rotate(360deg); } }
.dev-export-overlay__title {
  font-size: 17px; font-weight: 700; color: var(--text-primary, #111);
  margin-bottom: 8px; font-family: 'Manrope', sans-serif;
}
.dev-export-overlay__text {
  font-size: 13px; color: var(--text-muted, #6b7280); line-height: 1.5;
}
[data-theme="dark"] .dev-export-overlay { background: rgba(0,0,0,.7); }
[data-theme="dark"] .dev-export-overlay__card { box-shadow: 0 20px 60px rgba(0,0,0,.5); }